From d1fdc262f27080bf38837c6a975b82ee2d7135fe Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Mon, 30 Mar 2026 08:10:08 -0300
Subject: [PATCH] mmm: reduce default mmap size.

---
 eventstore/mmm/indexinglayer.go | 2 +-
 eventstore/mmm/mmmm.go          | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/eventstore/mmm/indexinglayer.go b/eventstore/mmm/indexinglayer.go
index 41267d0..5d3d90a 100644
--- a/eventstore/mmm/indexinglayer.go
+++ b/eventstore/mmm/indexinglayer.go
@@ -61,7 +61,7 @@ func (il *IndexingLayer) Init() error {
 
 	env.SetMaxDBs(9)
 	env.SetMaxReaders(1000)
-	env.SetMapSize(1 << 38) // ~273GB
+	env.SetMapSize(MMAP_INFINITE_SIZE)
 
 	// create directory if it doesn't exist and open it
 	if err := os.MkdirAll(path, 0755); err != nil {
diff --git a/eventstore/mmm/mmmm.go b/eventstore/mmm/mmmm.go
index f0f71b3..b34a6f0 100644
--- a/eventstore/mmm/mmmm.go
+++ b/eventstore/mmm/mmmm.go
@@ -4,7 +4,6 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"math"
 	"os"
 	"path/filepath"
 	"slices"
@@ -51,7 +50,7 @@ func (b *MultiMmapManager) String() string {
 }
 
 const (
-	MMAP_INFINITE_SIZE = math.MaxInt
+	MMAP_INFINITE_SIZE = 100_000_000_000
 	maxuint16          = 65535
 	maxuint32          = 4294967295
 )
@@ -106,7 +105,7 @@ func (b *MultiMmapManager) Init() error {
 
 	env.SetMaxDBs(3)
 	env.SetMaxReaders(1000)
-	env.SetMapSize(1 << 38) // ~273GB
+	env.SetMapSize(MMAP_INFINITE_SIZE)
 
 	err = env.Open(dbpath, lmdb.NoTLS, 0644)
 	if err != nil {